Holga's iPhone case features a vintage rotating wheel with lens filters
iPhone Savior: Holga Dials Up 9 Reasons To Love Their New iPhone Filter Case
HOLGA IphoNe 4 - Detachable Lens And Filter Case In Silver - fotoimpex.com analogue photography
Holga 400111 iPhone Case with Detachable Magnetic Lens Turret - 1 Pack - Retail Packaging - White : Amazon.ca: Electronics
Holga Detachable Lens and Filter for Iphone 5 - Retro to Go
Holga Iphone Special Magical Lens & Filter Turret Slft-ip5 For Iphone5 Camera Phone Case - 5 Color White Black Blue Red Yellow - Camera Filters - AliExpress
Holga Lens Filter and Case Kit for iPhone 4/4S (White) 400111